[PATCH 10/24] rcu/tree: add rcutree.rcu_min_cached_objs description

Uladzislau Rezki (Sony)
2020-04-28T21:00:30Z

Document the rcutree.rcu_min_cached_objs sysfs kernel parameter.

Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
---
Documentation/admin-guide/kernel-parameters.txt | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 828ff975fbc6..b2b7022374af 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -3977,6 +3977,14 @@
latencies, which will choose a value aligned
with the appropriate hardware boundaries.

+ rcutree.rcu_min_cached_objs= [KNL]
+ Minimum number of objects which are cached and
+ maintained per one CPU. Object size is equal
+ to PAGE_SIZE. The cache allows to reduce the
+ pressure to page allocator, also it makes the
+ whole algorithm to behave better in low memory
+ condition.
+
rcutree.jiffies_till_first_fqs= [KNL]
Set delay from grace-period initialization to
first attempt to force quiescent states.
--
2.20.1